Milking



PATENTED MAR. 6, 1906.

R. WALLACE. MILKING APPLIANCE.

APPLICATION FILED 1230.28, 1904.

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WITNESSES UNITED STATES PATENT OFFICE.

' ROBERT WALLACE, on oAsrLE DOUGLAS. SCOTLAND.

AMILKING APPLIANCE.

7 Specification of Letters Patent. Application filed December 28, 1904. Serial No. 238,614.

Patented March 6, 1906.

To (all whom it may concern:

Be it known that I, RoBERT'WALLAoE, agricultural-implement maker,a subject of the King of Great Britain and Ireland, and a resident of Castle Douglas, Kirkcudbrightshire, Scotland, have invented certain new and useful Improvements in Milking'Appliances, (for which an application for'a patent teat-cup to control the pulsating action round the teat, and which only requires one suctiontube for each teat, and the improvement of the action of the upper part of the teat-receiving cup,v and in order that my said invention and the manner of ca 'ng same into practice may be roperl umrstood I have ereunto appen ed a s eet of explanatory drawings, in which Figure 1 is an external elevation of a teatcup and suction-fittings as constructed in accordance with my improvements. Fig. 2 is a plan view corresponding to Fig. 1, but with the teat-cup and outer casing removed. Fig. 3 is an elevation at right angles to Fig. 1, but showing the outer metal tube insection to illustrate the rubber gro'oved tube; and Fig. 4 is a plan view corresponding to Fi 3, while Fig. 5 is a view corresponding to- 'ig. 3, but showing all the parts in sectional elevation.

Referring to the drawings, the teat-cup comprises, as usual, a central rubber or like -'inner and grooves b on the outer surface. An outer-tube or jacket A, of aluminium or other suitable material, is fitted outside the rubber tube B.

. The motor or engine is fitted inside --tlie lower'part ofthe central rubber tube B and preferably consists of a hollow metal or other vessel C with a tube or channel C having a other ends by a cross-head F hole or aperture 0. in communication with the ring-groove b on rubber tube B and having a sin le tube 0 with a rubber or like connection 'to. the milk-receiving pail and a tube c leading from hollow space C to a threerported slide-valve D with ports d d cl in communication with the atmosphere and vacuum and having connectionsthrough the ports g g g in bottom of vessel C with the i channels 6 e and e e to the ends E E of a cylinder or cylinders E, fitted within a doubleended or duplex connected piston E (shown partly in section,) the channel e also commu- 'nicating with the vertical channel C The slide-valve D is preferably operated by levers F, fulcrumed at F to the central part of the piston E and connected at their The crosshead F has hooked ends f, to which are attached the'ends of recoil-acting helical spring ff, having their other ends attached to hooked ends f on a fixed cross-head f By this means when the valve D is 'openingsay by its port dthe ports 9 g of vessel U communication 'is established through the'tube c with the source of suction or vacuum action, and suction is established through the channel C orifice C, and ring-groove b with the grooves b in teat-cup B, and-the endE or cylinder E is also under suction, while at same time atmospheric air enters the oppomovement causes the cross-head F of levers F to act on the valve 1) to shift it to the opposite end to put its port (1 in'communication with ports g g and op osite end E of cylinder; The other'end of cylinder and the channel C then become in turn in 'communi- 5 cation with the atmosphere through the ports'g and d and channels a e to act on ably fitted over the top of tube 0 to baffle or prevent ingress of milk to motor-valve.

The rubber-grooved tube B is carried some dista1ice;ahove the outer annular sleeve A and is doubled or folded over at top B, so as to present a mouth of an oval or round collapsible shape into which the teat of the cow is inserted. By this means the milk is drawn away by continuous suction action to the milk-receiving pails, and a pulsating or inter niittent action is simultaneously produced around the teat, while the dischargingof air into the interior of cup facilitates the discharging of the last traces of milk from cup,

at a continuous vacuum, the inlet of atmospheric air through the motor to the outer chamber of the cup producing a pulsating action around the teat.

2. In a milking ap liance, the combination of an individual ouble-walled cup with a vacuum-motor secured to such individual cup, and a single suction-tube connected to said cup. p

3; In milking appliances the combination of a cup, a vacuum-motor dischar ing its air into center of cup, With the ru ber tube formed with vertical grooves and horizontal glriofive, and surrounded by an outer metal s e r 4. In milking appliances the combination of an outer metal tube, and an inner rubber tube having longitudinal and horizontal grooves, wit means for communicating suction and atmospheric action alternately thereto. 5

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ROBERT WALLACE.

the motor and the milk-receiving portion of Witnesses:

R. O. THOMSON, WM. RUTHERFORD. 

